Organisms reproduce by two main methods. one is division, in which the animal divides and creates an exact copy of itself. what is the other main method of reproduction?
a. combination
b. fusion
c. egg

It is believed that europa, one of jupiter’s moons has an ocean beneath its surface. based on how earth’s oceans and atmosphere are believed to have formed, what can be said about europa’s supposed ocean? the arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced , similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s .